Kinetics of swollen surface layer formation in the diffusion process of polymer dissolution

2007 ◽  
pp. 221-226 ◽  
Author(s):  
L. Lapčík ◽  
L. Valko ◽  
M. Mikula ◽  
V. Jančovičová ◽  
J. Panák
Keyword(s):  
Surface Layer ◽  
Diffusion Process ◽  
Layer Formation ◽  
Polymer Dissolution ◽  
Kinetics Of ◽  
Surface Layer Formation

Poly(ether imide)/N -methyl pyrrolidinone solutions: kinetics of water vapour absorption and surface layer formation

2008 ◽  
Vol 57 (5) ◽  
pp. 778-784 ◽  
Author(s):  
Céline Pochat-Bohatier ◽  
Jean-Pierre Cohen-Addad ◽  
Watchanida Chinpa ◽  
André Deratani
Keyword(s):  
Surface Layer ◽  
Water Vapour ◽  
Layer Formation ◽  
Water Vapour Absorption ◽  
Kinetics Of ◽  
Surface Layer Formation

Investigation of in-vitro bacterial surface layer formation by FBARs

2009 ◽  
Author(s):  
Michael Mertig ◽  
Anja Bluher ◽  
Christiane Erler ◽  
Beate Katzschner ◽  
Wolfgang Pompe ◽  
...  
Keyword(s):  
Surface Layer ◽  
Layer Formation ◽  
Bacterial Surface ◽  
Surface Layer Formation

An Analysis of Hydroxyapatite Surface Layer Formation

1999 ◽  
Vol 103 (10) ◽  
pp. 1671-1675 ◽  
Author(s):  
P. W. Brown ◽  
R. I. Martin
Keyword(s):  
Surface Layer ◽  
Layer Formation ◽  
Surface Layer Formation

Improvement of Surface Layer Formation Technology for Articles Produced by Layer-by-Layer Laser Sintering

2013 ◽  
Vol 379 ◽  
pp. 56-59 ◽  
Author(s):  
N.A. Saprykina ◽  
A.A. Saprykin
Keyword(s):  
Surface Layer ◽  
Powder Material ◽  
Copper Powder ◽  
Manufacturing Process ◽  
Laser Sintering ◽  
Layer By Layer ◽  
Layer Formation ◽  
Mathematical Relation ◽  
Surface Layer Formation

Mathematical relation between roughness of the surface layer of the sintered article and layer-by-layer laser sintering modes obtained from experiments conducted using copper powder material PMS-1. Authors suggest that split manufacturing process of an article and its inner part must be split to roughing, semi-finishing and finishing modes.

scholarly journals Management of space orientation of the end effector of generation of geometry system fiveaxis manufacturing machinery for additive generation of geometry

2018 ◽  
Vol 226 ◽  
pp. 01004 ◽  
Author(s):  
Alexander N. Grechukhin ◽  
Ivan S. Anikutin ◽  
Alexander S. Byshkin
Keyword(s):  
Surface Layer ◽  
Spatial Orientation ◽  
Process Equipment ◽  
Layer Formation ◽  
Mechatronic System ◽  
End Effector ◽  
Advantages And Disadvantages ◽  
Working Element ◽  
Additive Methods ◽  
Surface Layer Formation

The article is devoted to the investigation of the surface layer formation accuracy of engineering products by additive methods. The analysis of advantages and disadvantages of layered products synthesis technologies was carried out. It was revealed that, in additive shaping, the exact characteristics of the surface layer differ significantly from the accuracy characteristics of the surface layer of products obtained by the traditional methods. The analysis of domestic and foreign works on the topic of research was carried out. It is revealed that to increase the accuracy characteristics of products obtained by additive methods, it is necessary to realize dynamically the spatial orientation of the working element of the additive installation in the process of shaping. To control the spatial orientation of the working organ of additive equipment, a method is proposed. According to the proposed method, the controlled parameters of the additive installation are calculated on the basis of a 5- coordinate mechatronic system. The proposed methodology will allow to calculate the controlled parameters of the process equipment, to provide the required orientation of the working element of the additive installation to reduce the error of shaping (approximation), using 5-coordinate mechatronic system

scholarly journals Toward an understanding of surface layer formation, growth, and transformation at the glass–fluid interface

2018 ◽  
Vol 229 ◽  
pp. 65-84 ◽  
Author(s):  
J. Hopf ◽  
J.R. Eskelsen ◽  
M. Chiu ◽  
A.V. Ievlev ◽  
O.S. Ovchinnikova ◽  
...  
Keyword(s):  
Surface Layer ◽  
Layer Formation ◽  
Fluid Interface ◽  
Surface Layer Formation

scholarly journals Stratigraphic Studies and Surface-Layer Formation. A Case Study: Eastern Wilkes Land, East Antarctica (Abstract)

1988 ◽  
Vol 11 ◽  
pp. 216
Author(s):  
I. D. Goodwin
Keyword(s):  
Surface Layer ◽  
Oxygen Isotope ◽  
Snow Accumulation ◽  
Katabatic Wind ◽  
Late Winter ◽  
Layer Formation ◽  
Annual Layer ◽  
Wilkes Land ◽  
Firn Core ◽  
Surface Layer Formation

This paper presents the results of a detailed study on the geomorphic and diagenetic processes of surface-layer formation and its subsequent preservation in the stratigraphic record. The study supplemented stratigraphic studies carried out along a 750 km ANARE traverse route along the 69 °S parallel between 112° and 131 °E (which approximately follows the 2000 m contour) in the katabatic wind zone of eastern Wilkes Land. A 100 cane farm was established at GD03 (69 °S, 115°E; 1835 m a.s.l.), adjacent to a 30 m deep firn-core drill site. The cane farm was used to monitor seasonal changes in snow accumulation and the type, size, distribution and orientation of the surface micro-relief. The annual snow accumulation at GD03 is equivalent to 300 kg m−2 of water. This annual layer is visibly marked by a multi-layered ice crust, typically 1–2 mm thick, which is formed in autumn during a hiatus in snow supply. Within the annual layer, single-layered thin ice crusts were observed. These correspond to short hiatus periods, of the order of 2–3 weeks, during late winter–early spring, and radiation glazes formed during summer. Density and oxygen-isotope–depth profiles display annual cyclicity within the snow-pack. Considerable horizontal variation was found in a single annual-layer thickness, with respect to ice-crust thickness, snow-density and oxygen-isotope values, and depth-hoar development, when traced in 21 2 m cores drilled at 5 m horizontal spacing. The observed changes in surface micro-relief distributions over the cane farm have enabled a greater understanding of vertical variations between annual layers observed in the 30 m firn core.

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